From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DB97C2D0A8 for ; Sat, 26 Sep 2020 11:15:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C6CFF20717 for ; Sat, 26 Sep 2020 11:15:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726244AbgIZLPg (ORCPT ); Sat, 26 Sep 2020 07:15:36 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:50133 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726183AbgIZLPg (ORCPT ); Sat, 26 Sep 2020 07:15:36 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-21-pPzLCZvuPZ2IoF4u7DB02A-1; Sat, 26 Sep 2020 12:15:32 +0100 X-MC-Unique: pPzLCZvuPZ2IoF4u7DB02A-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Sat, 26 Sep 2020 12:15:31 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Sat, 26 Sep 2020 12:15:31 +0100 From: David Laight To: 'syzbot' , "linux-fsdevel@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "syzkaller-bugs@googlegroups.com" , "viro@zeniv.linux.org.uk" Subject: RE: WARNING in __kernel_read (2) Thread-Topic: WARNING in __kernel_read (2) Thread-Index: AQHWk7DmAtv55MEfq0C+fzgffzQfPql6xRLQ Date: Sat, 26 Sep 2020 11:15:31 +0000 Message-ID: <3b3de066852d4e30bd9d85bd28023100@AcuMS.aculab.com> References: <000000000000da992305b02e9a51@google.com> In-Reply-To: <000000000000da992305b02e9a51@google.com> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org PiBGcm9tOiBzeXpib3QgPHN5emJvdCs1MTE3N2U0MTQ0ZDc2NDgyN2M0NUBzeXprYWxsZXIuYXBw c3BvdG1haWwuY29tPg0KPiBTZW50OiAyNiBTZXB0ZW1iZXIgMjAyMCAwMzo1OA0KPiBUbzogbGlu dXgtZnNkZXZlbEB2Z2VyLmtlcm5lbC5vcmc7IGxpbnV4LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmc7 IHN5emthbGxlci1idWdzQGdvb2dsZWdyb3Vwcy5jb207DQo+IHZpcm9AemVuaXYubGludXgub3Jn LnVrDQo+IFN1YmplY3Q6IFdBUk5JTkcgaW4gX19rZXJuZWxfcmVhZCAoMikNCg0KSSBzdXNwZWN0 IHRoaXMgaXMgY2FsbGluZyBmaW5pdF9tb2R1bGUoKSBvbiBhbiBmZA0KdGhhdCBkb2Vzbid0IGhh dmUgcmVhZCBwZXJtaXNzaW9ucy4NCg0KCURhdmlkDQoNCj4gDQo+IEhlbGxvLA0KPiANCj4gc3l6 Ym90IGZvdW5kIHRoZSBmb2xsb3dpbmcgaXNzdWUgb246DQo+IA0KPiBIRUFEIGNvbW1pdDogICAg YjEwYjhhZDggQWRkIGxpbnV4LW5leHQgc3BlY2lmaWMgZmlsZXMgZm9yIDIwMjAwOTIxDQo+IGdp dCB0cmVlOiAgICAgICBsaW51eC1uZXh0DQo+IGNvbnNvbGUgb3V0cHV0OiBodHRwczovL3N5emth bGxlci5hcHBzcG90LmNvbS94L2xvZy50eHQ/eD0xNDM3ZWZmMTkwMDAwMA0KPiBrZXJuZWwgY29u ZmlnOiAgaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20veC8uY29uZmlnP3g9M2NmMDc4Mjkz MzQzMmI0Mw0KPiBkYXNoYm9hcmQgbGluazogaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20v YnVnP2V4dGlkPTUxMTc3ZTQxNDRkNzY0ODI3YzQ1DQo+IGNvbXBpbGVyOiAgICAgICBnY2MgKEdD QykgMTAuMS4wLXN5eiAyMDIwMDUwNw0KPiBzeXogcmVwcm86ICAgICAgaHR0cHM6Ly9zeXprYWxs ZXIuYXBwc3BvdC5jb20veC9yZXByby5zeXo/eD0xMGY5ZjA4ZDkwMDAwMA0KPiBDIHJlcHJvZHVj ZXI6ICAgaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20veC9yZXByby5jP3g9MTNkNjdjODE5 MDAwMDANCj4gDQo+IElNUE9SVEFOVDogaWYgeW91IGZpeCB0aGUgaXNzdWUsIHBsZWFzZSBhZGQg dGhlIGZvbGxvd2luZyB0YWcgdG8gdGhlIGNvbW1pdDoNCj4gUmVwb3J0ZWQtYnk6IHN5emJvdCs1 MTE3N2U0MTQ0ZDc2NDgyN2M0NUBzeXprYWxsZXIuYXBwc3BvdG1haWwuY29tDQo+IA0KPiAtLS0t LS0tLS0tLS1bIGN1dCBoZXJlIF0tLS0tLS0tLS0tLS0NCj4gV0FSTklORzogQ1BVOiAwIFBJRDog NzAyOCBhdCBmcy9yZWFkX3dyaXRlLmM6NDQwIF9fa2VybmVsX3JlYWQrMHg4MGUvMHhhMTAgZnMv cmVhZF93cml0ZS5jOjQ0MA0KPiBNb2R1bGVzIGxpbmtlZCBpbjoNCj4gQ1BVOiAwIFBJRDogNzAy OCBDb21tOiBzeXotZXhlY3V0b3I0NTggTm90IHRhaW50ZWQgNS45LjAtcmM1LW5leHQtMjAyMDA5 MjEtc3l6a2FsbGVyICMwDQo+IEhhcmR3YXJlIG5hbWU6IEdvb2dsZSBHb29nbGUgQ29tcHV0ZSBF bmdpbmUvR29vZ2xlIENvbXB1dGUgRW5naW5lLCBCSU9TIEdvb2dsZSAwMS8wMS8yMDExDQo+IFJJ UDogMDAxMDpfX2tlcm5lbF9yZWFkKzB4ODBlLzB4YTEwIGZzL3JlYWRfd3JpdGUuYzo0NDANCj4g Q29kZTogOGEgZTggYzYgOTcgMTIgMDIgMzEgZmYgODkgYzMgODkgYzYgZTggMmIgYWMgYjMgZmYg ODUgZGIgMGYgODUgNmUgM2IgNTUgMDYgNDkgYzcgYzUgZWEgZmYgZmYgZmYNCj4gZTkgYmQgZmQg ZmYgZmYgZTggYjIgYWYgYjMgZmYgPDBmPiAwYiA0OSBjNyBjNSBlYSBmZiBmZiBmZiBlOSBhYSBm ZCBmZiBmZiBlOCA5ZiBhZiBiMyBmZiA0OCA4OSBlYQ0KPiBSU1A6IDAwMTg6ZmZmZmM5MDAwNjAy N2IzOCBFRkxBR1M6IDAwMDEwMjkzDQo+IFJBWDogMDAwMDAwMDAwMDAwMDAwMCBSQlg6IDAwMDAw MDAwMDAwMDAwMDIgUkNYOiBmZmZmZmZmZjgxYzE3MTViDQo+IFJEWDogZmZmZjg4ODA5MWViYTQ4 MCBSU0k6IGZmZmZmZmZmODFjMTc4N2UgUkRJOiAwMDAwMDAwMDAwMDAwMDA1DQo+IFJCUDogMDAw MDAwMDAwMDA4ODAxYyBSMDg6IDAwMDAwMDAwMDAwMDAwMDEgUjA5OiBmZmZmODg4MDkxZWJhZDg4 DQo+IFIxMDogMDAwMDAwMDAwMDAwMDAwMCBSMTE6IDAwMDAwMDAwMDAwMDAwMDAgUjEyOiBmZmZm ODg4MGExNjcxMGMwDQo+IFIxMzogMDAwMDAwMDAwMDAwMDAwMSBSMTQ6IGZmZmZjOTAwMDYwMjdk MDggUjE1OiBmZmZmODg4MGExNjcxMTQ0DQo+IEZTOiAgMDAwMDdlZmNkNjBmMTcwMCgwMDAwKSBH UzpmZmZmODg4MGFlNDAwMDAwKDAwMDApIGtubEdTOjAwMDAwMDAwMDAwMDAwMDANCj4gQ1M6ICAw MDEwIERTOiAwMDAwIEVTOiAwMDAwIENSMDogMDAwMDAwMDA4MDA1MDAzMw0KPiBDUjI6IDAwMDAw MDAwMjAwMDAwMDAgQ1IzOiAwMDAwMDAwMGEyZGM1MDAwIENSNDogMDAwMDAwMDAwMDE1MDZmMA0K PiBEUjA6IDAwMDAwMDAwMDAwMDAwMDAgRFIxOiAwMDAwMDAwMDAwMDAwMDAwIERSMjogMDAwMDAw MDAwMDAwMDAwMA0KPiBEUjM6IDAwMDAwMDAwMDAwMDAwMDAgRFI2OiAwMDAwMDAwMGZmZmUwZmYw IERSNzogMDAwMDAwMDAwMDAwMDQwMA0KPiBDYWxsIFRyYWNlOg0KPiAga2VybmVsX3JlYWQrMHg1 Mi8weDcwIGZzL3JlYWRfd3JpdGUuYzo0NzENCj4gIGtlcm5lbF9yZWFkX2ZpbGUgZnMvZXhlYy5j Ojk4OSBbaW5saW5lXQ0KPiAga2VybmVsX3JlYWRfZmlsZSsweDJlNS8weDYyMCBmcy9leGVjLmM6 OTUyDQo+ICBrZXJuZWxfcmVhZF9maWxlX2Zyb21fZmQrMHg1Ni8weGEwIGZzL2V4ZWMuYzoxMDc2 DQo+ICBfX2RvX3N5c19maW5pdF9tb2R1bGUrMHhlNi8weDE5MCBrZXJuZWwvbW9kdWxlLmM6NDA2 Ng0KPiAgZG9fc3lzY2FsbF82NCsweDJkLzB4NzAgYXJjaC94ODYvZW50cnkvY29tbW9uLmM6NDYN Cj4gIGVudHJ5X1NZU0NBTExfNjRfYWZ0ZXJfaHdmcmFtZSsweDQ0LzB4YTkNCj4gUklQOiAwMDMz OjB4NDRhNjM5DQo+IENvZGU6IGU4IGJjIGI0IDAyIDAwIDQ4IDgzIGM0IDE4IGMzIDBmIDFmIDgw IDAwIDAwIDAwIDAwIDQ4IDg5IGY4IDQ4IDg5IGY3IDQ4IDg5IGQ2IDQ4IDg5IGNhIDRkIDg5IGMy DQo+IDRkIDg5IGM4IDRjIDhiIDRjIDI0IDA4IDBmIDA1IDw0OD4gM2QgMDEgZjAgZmYgZmYgMGYg ODMgNGIgY2MgZmIgZmYgYzMgNjYgMmUgMGYgMWYgODQgMDAgMDAgMDAgMDANCj4gUlNQOiAwMDJi OjAwMDA3ZWZjZDYwZjBkYjggRUZMQUdTOiAwMDAwMDI0NiBPUklHX1JBWDogMDAwMDAwMDAwMDAw MDEzOQ0KPiBSQVg6IGZmZmZmZmZmZmZmZmZmZGEgUkJYOiAwMDAwMDAwMDAwNmRiYzY4IFJDWDog MDAwMDAwMDAwMDQ0YTYzOQ0KPiBSRFg6IDAwMDAwMDAwMDAwMDAwMDAgUlNJOiAwMDAwMDAwMDAw MDAwMDAwIFJESTogMDAwMDAwMDAwMDAwMDAwNA0KPiBSQlA6IDAwMDAwMDAwMDA2ZGJjNjAgUjA4 OiAwMDAwN2VmY2Q2MGYxNzAwIFIwOTogMDAwMDAwMDAwMDAwMDAwMA0KPiBSMTA6IDAwMDA3ZWZj ZDYwZjE3MDAgUjExOiAwMDAwMDAwMDAwMDAwMjQ2IFIxMjogMDAwMDAwMDAwMDZkYmM2Yw0KPiBS MTM6IDAwMDA3ZmZkM2Q4OTI4ZWYgUjE0OiAwMDAwN2VmY2Q2MGYxOWMwIFIxNTogMDAwMDAwMDAw MDAwMDAwMQ0KPiANCj4gDQo+IC0tLQ0KPiBUaGlzIHJlcG9ydCBpcyBnZW5lcmF0ZWQgYnkgYSBi b3QuIEl0IG1heSBjb250YWluIGVycm9ycy4NCj4gU2VlIGh0dHBzOi8vZ29vLmdsL3Rwc21FSiBm b3IgbW9yZSBpbmZvcm1hdGlvbiBhYm91dCBzeXpib3QuDQo+IHN5emJvdCBlbmdpbmVlcnMgY2Fu IGJlIHJlYWNoZWQgYXQgc3l6a2FsbGVyQGdvb2dsZWdyb3Vwcy5jb20uDQo+IA0KPiBzeXpib3Qg d2lsbCBrZWVwIHRyYWNrIG9mIHRoaXMgaXNzdWUuIFNlZToNCj4gaHR0cHM6Ly9nb28uZ2wvdHBz bUVKI3N0YXR1cyBmb3IgaG93IHRvIGNvbW11bmljYXRlIHdpdGggc3l6Ym90Lg0KPiBzeXpib3Qg Y2FuIHRlc3QgcGF0Y2hlcyBmb3IgdGhpcyBpc3N1ZSwgZm9yIGRldGFpbHMgc2VlOg0KPiBodHRw czovL2dvby5nbC90cHNtRUojdGVzdGluZy1wYXRjaGVzDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVz cyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEg MVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==